Engine mount



Feb. 14, 1961 G. wAsAsTlERNA ETAL 2,971,476

ENGINE MOUNT Filed NOV. 21, 1958 FIGURE l BY M Feb- 14, 1961 G. wAsAsTlr-:RNA ETAL 2,971,476

ENGINE MOUNT Filed Nov. 2l, 1958 3 SheetsSheet Y2 FIGURE 2 G//ber/ Larsson Brje L/ndb/ad INV ENTORS Feb. 14, 1961 G. wAsAsTlr-:RNA Erm. 2,971,476

ENGINE MOUNT Filed Nov. 21, 1958 s sheets-sheet s l L l l 4| l l l l I 59 38 l Y l 36 i Gsfa Wasasf/err/a Gl/ber Larsson Brje L/'ndb/ad INVENTORS F l G U R E 4 BY wif@ United StatesPatent ENGINE MUNT Filed Nov. 21, 1958, Ser. No. 775,636

9 Claims. (Cl. 10S-133) This invention relates generally to an engine mount, and more particularly to an engine mount for use in railroad cars.

Many refrigerated railway cars are divided into machine and lading compartments. The machinery which supplies refrigerant to the cooling coils disposed in the lading compartment is -mounted in the machine compartment. Generally, the machinery includes a diesel prime mover or engine and an electrical generator driven thereby, and an electrically operated compressor unit which supplies refrigerant to the cooling coils.

As is well known, railroad cars are subjected to relatively high accelerating and decelerating forces during switching. A source of considerable difficulty in the refrigerated railway cars of the prior art has been the mounting for the prime mover. In many instances, the prime mover land associated equipment have been severely damaged because the mounting has failed under the severe stresses encountered.

It is a general object of the present invention to provide an improved mounting means for components such as engines, prime movers and the like used in railway cars.

It is another object of the present invention to provide a mounting means of the character described which is capable of withstanding relatively high accelerating and decelerating forces.

It is a further object of the present invention to provide a mounting means of the character described which includes mounting means rigidly secured to the component to be mounted and resiliently secured to a base with the resilient securing means disposed in a horizontal plane which lies at or near the center of gravity of the component.

These and other objects of the invention will become more clearly apparent from the following description when taken in conjunction with the accompanying drawing.

Referring to the drawing:

Figure 1 is an elevational view, partly in section of the machine compartment of a typical refrigerated railway car and a portion of the lading compartment;

Figure 2 is a view taken along the lines 2-2 of Figure 1;

Figure 3 is an enlarged view showing the mounting means of the present invention in more detail; and

Figure 4 is a side elevational view showing the mounting means.

In Figure 1, a refrigerated railway car of the type which includes a bulkhead 11 serving to divide the car into a lading compartment 12 and a machinery compart ment 13 is illustrated. The refrigerated railway car illustrated is of the envelope type in which an envelope of air surrounds the lading compartment defined by the walls 14. A cooling means 16 is placed in the iiue formed between the end wall 14a and the insulated bulkhead 11. Suitable fan means 17 are provided for circul2,971,476 Patented Feb. 14, 1961 fie lating the air past the cooling units and over the lading compartment.

A compressor unit 21 serves to provide the refrigerant for the cooling unit 16. The compressor 22 may be electrically driven and the power supplied thereto by the combination of the diesel engine 24 which drives a generator 23.

in the prior art rigid mounting means have been employed. Resilient mounting means have also been employed; however, the resilient means are placed near the oor. 'lhe center of gravity of the equipment is not near the connection between the engine and oor, or the engine and the resilient means. Therefore, a substantial tilting movement takes place which often causes failure.

In the present invention, the prime mover is provided with mounting brackets 26 which are suitably secured thereto, as for example, by welding, bolting, or the like. As illustrated, a pair of mounting brackets 26a is se cured to the diesel engine and a pair of mounting brackets 26b is secured to the generator. The mounting brackets are provided with strengthening plates 27 at their lower end, which plates are adapted to receive the resilient mounting means 28 which resiliently mounts the engine on the strengthening plates 29 of the upwardly extending mounting arms 31. Preferably, the plates 27 lie on planes which dene a dihedral angle having its vertex below the center of gravity of the equipment. Similarly, the plates 29 lie on planes which define a dihedral angle having its vertex disposed below the center of gravity and having the same angularity as the dihedral angle defining the surface of the plates 27. As illustrated, a pair of resil# ient mounting means 28a and 2gb are employed withV each of the mounting means. The complete assembly may be held together by bolts 33 which have their ends threadably secured to each side of the resilient mounting means 28a and 28b. The ends of the bolts are spaced from one another whereby the resilient mounting means can compress and expand freely.

The plates 29 are held on arms 31 which extend upwardly and which may be suitably secured to the floor.

Preferably, the arms are secured to a box-like foundation member 36 whereby the complete unit may be easily placed in the machine compartment and a simple connection made to the supporting structure. The member 36 is of box-like construction and receives the lower ends of the arm 31 which arms may be suitably welded thereto. The arms 31 may be formed with upwardly extending spaced plates 3S and 39 bridged by a plate 41 which is welded thereto.

The brackets 26 and arms 31 are of such length that the plates 27 and 29 lie substantially on a plane through the center of gravity of the equipment. The center of gravity is schematically indicated by the marking 42 in Figures 1 and 2.

By mounting in the manner described, the forces are directly applied to the mounting means and no tilting movement results. Further, by disposing the plates 27 and 29 as described, the forces on the resilient members 28 are compression forces rather than shearing forces.

Thus, it is seen that an improved engine mounting is provided. The mounting provides resilient mounting of the prime mover with the mounting means disposed whereby they lie substantially in a plane which goes through the center of gravity of the equipment. Tilting movements are insignificant in comparison to those which arise in conventional mountings. The resilient mounting means are disposed in such a position that the forces applied thereto are primarily compression forces.

We claim:

1. An engine mount for mounting a prime mover in a railway car comprising at least three mounting brackets located lin a horizontal plane and secured to said prime mover, a base including support arms in registry with said mounting brackets,rand resilient means intera posed between said mounting brackets and said support arms for connecting the same, said horizontal plane being through the center of gravity of said-prime mover.

2. An engine mount for mounting a prime mover in a railway car comprising at least three mounting brackets located in a horizontal plane and secured to said prime mover, iirst plates mounted at the free end of said brackets, mounting arms adapted to be rigidly secured to `said railway car and in registry with said mounting brackets, second plates disposed at the upper end of said arms, and resilient means interposed between said first and second plates for resiliently mounting the prime mover to the arms, said horizontal plane being through the center of gravity of said prime mover.

3. Apparatus as in claim 2 wherein said plates lie on surfaces forming dihedral angles having vertices below the center of gravity of said equipment.

4. An engine mount for mounting a prime mover in a railway car comprising at least three mounting brackets located in a horizontal plane and secured to said prime mover, a base including a box-like member and mounting arms secured thereto and extending upwardly in Aregistry with said mounting brackets, the free ends of said arms adapted to be connected to said mounting brackets, and resilient means interposed between said mounting brackn ets and said arms for connecting the same, said horizontal plane being through the center of gravity of the prime mover.

5. An engine mount for mounting a prime mover in a refrigerated` railway car comprising at least three mounting brackets located in a horizontal plane and secured to said prime mover, said brackets having their free ends extending downward, tirst plates mounted at the free end of said brackets, a base including a box-like member and mounting arms secured`thereto and extending upwardly in registry with said'mounting brackets, second plates disposed at the upper end of said arms, and resilient means interposed between said first and second plates for resiliently mounting the prime mover on the arms, said horizontal plane being .through the center of gravity of said prime mover.

6. Apparatus as in claim 5 wherein said plates lie on surfaces forming dihedral angles having vertices below the center of gravity of said equipment.

7. An engine mount for mounting a prime mover in a railway car comprising two pairs of spaced brackets all located in a common horizontal plane, a base including a box-like mounting member and two pairs of spaced arms secured thereto and extending upwardly therefrom and in registry with said spaced brackets, and .resilient means for connectinglthe brackets to the corresponding arms, said horizontal plane being through the center of gravity of the `prime mover.

8. Apparatus as in claim 7 wherein plates are disposed on the free ends of said arms to receive the resilient mounting means.

9. Apparatus as in claim 8 wherein said plates lie on surfaces forming dihedral angles having vertices below the center of gravity of said equipment.

References Cited in the tile of this patent aov UNITED STATES PATENTS 

